1. Objective The aim of this paper is to study the value of preoperative lymphography and radionuclide imaging for rectal cancer patients.
   目的评价直肠癌病人术前淋巴管造影和放射性核素淋巴显像的临床价值。
2. It has been shown that a preoperative visit with the anesthesiologist immediately before surgery may serve as a powerful anxiolytic itself.
   经验显示，术前一刻麻醉医生的访视本身就是一副强有力的镇静药。

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